Re: Routers and resolv.conf: [was: extremely slow to ssh out from my machine]
On Mon, 2005-02-28 at 11:25 +0100, Jan Nordholz wrote:
> > On Monday 28 February 2005 09:24, michael wrote:
> > > the router (a D-Link) config again I see it has entries
> > > Configuration -> ProxyDNS 212.85.249.130
> > > Configuration -> DHCP configuration on LAN Primary DNS=192.168.0.1
> > > Configuration -> DHCP configuration on LAN Secondary DNS=212.1.130.32
> > > which lead to a /etc/resolv.conf of
> > > nameserver 192.168.0.1
> > > nameserver 212.1.130.32
> > >
> > > giving the probs for ssh as before. Could some kind soul clarify to me
> > > the diffs between the 3 entries in the router config and why the
> > > proxyDNS doesn't appear in the resolv.conf?
> >
> > I'm guessing that the following is happening: your router connects to your
> > ISP, and gets two nameservers from there. It uses one as it's own primary
> > nameserver, and the second as a secondary nameserver, of course. However,
> > the router also serves names by proxy, so instead of simply passing those on
> > to computers on the LAN, it replaces the primary NS with its OWN address.
> > So, you see the IP of the router, and the IP of the secondary nameserver on
> > your end. In short, it looks fine to me.
> >
> > --
> > Lee.
>
> Hi,
>
> I agree with Lee about how your resolv.conf gets constructed. However the
> problem still is that the router (who apparently behaves as if it were a
> query-forwarding DNS server) doesn't respond to DNS queries... is there a
> config option in your router to disable the router-internal DNS server (and
> to forward the ISP nameservers directly)?
> If not, you can only hardwire your resolv.conf to the two other nameservers
> above, and prevent it from being rebuilt. (IIRC, there is a package "resolvconf"
> that rebuilds this file on every reboot from various sources, among them
> information received via DHCP - deinstalling it or at least removing it
> from /etc/rc*.d/ should fix that)
>
> HTH,
>
> Jan (now replying from a different address)
I'm at work now but will look into these when I get home this evening;
thanks, Michael
>
>
--
Michael Bane
Atmospheric Physics Group
University of Manchester
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